higgins



E. HIGGINS.

DIE SINKING MACHINE.

APPLICATION FILED AUG- 19, I918.

Patented July 22; 1919.

'7 SHEETS-SHEET 1.

E. HIGGlNS.

DIE SlNKlNG MACHINE.

APPLICATION men AUG-19. 191s.

Patented July 22, 1919.

7SHEETS-SHEET 2.

Slum/Moo EUGENE H/GG/Nrj DIE SINKING MACHINE.

- APPLICATION FILED AUG. 19, 191B.

Patentd July 22, 1919;

4. 4 ISHEETS SHEET I E. meems. DIE SINKING MACHINE.

APPLICATION FILED AUG. 19, 91B.

Patented July 22,1919.

'7 SHEETS-SHEET 5.

1 E Elwi imeooeo E. HIGGINS.

DIE SINKING MACHINE- APPLICATIUN HLED AUG-19, 1918. 1,310,656. Patented July 22, 1919 7SHEETS-SHEET 6- "Ii Y3K- G avwzwto'o j warm: mama I W' uco oao K E. HIGGINS.

DIE SINKING MACHINE. APPLICATION FILED AUG. \9, 1918.

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80 l es 0 6 m gwue/wlioz [UGENE HIGGINS atto'unawv EUGENE HIGGINS, OF JACKSON, MICHIGAN, ASSIGNOR '10 JACKSON MACHINE TOOL C0.,

0F JACKSON, MICHIGAN.

DIE-SINKING MACHINE.

To all whom it may concern:

Be it known that I, EUGENE HIGGINS, a citizen of the United States, residing at Jackson, county of Jackson, State of Michigan, have invented certain-new and .useful Improvements in Die-Sinking Machines, of which the following is a specification.

This invention relates to improvements in die sinkin machines.

The mam objects of this invention are:

First, to provide an improved die sinking machine of lar e capacity.

Second, to 'provi e an improved die sinking machine which is capable of performing? various kinds of work.

urther objects, and objects relating to structural details, will definitely appear from the detailed description'to follow.

I accomplish the objects of my invention: by the devices and means described in the following specification; The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specificatiom'in which:

Figure I is a front perspective of a structure embodying the features of my invention.

Fig. II is a plan .view.

Fig. III is a plan of the base.

Fig. IV is an enlarged detail section through the head on a line corresponding to line 44 of Figs. 1, II, V and VI, parts being shown in fulllines for convenience in illustration. 4

Fig. V is a, detail vertical section through the head on a line corresponding to line 55 of Figs. VI and XLparts being shown in full lines. I

Fig. VI is a detail horizontal 1 section through the head on a line corresponding to line 66 of Figs. IV, V and IX.

Fig. VII is a detail section on a'lin'e corresponding to line 77 of Fig. VI, showing details of the locking features forth'e milling spindle and cutter driving gears.

Fig. VIII is an enlarged detail perspective of the gear locking means shown in Fig. VII.

Fig. IX is ahorizontal section on a line corresponding to line 9-9 of Fig. X, showing details. of the cutter driving means.

Fig. Xis a detail vertical'section on a line corresponding to line 10--10 of Fig. V,

Specification of Letters Patent.

showing details of the cutter and its drivmeans. 1g. XI is a detail section of the parts .shown in Fig. X in another position and illustrating the operation thereof.

In the drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are 7 taken looking in the direction of the little 7 arrows at the ends of the section lines.

Referring to the drawing, the base 1 is preferably provided with three feet, 2, 2 and 3, shown by dotted lines in Fig. 111, arranged in a triangular relation so as to provide 'a three point support for the machine, facilitating its setting and providing rigidity. When installing the -machine these feet only rest upon the foundation and the machine is leveled by shimmin under, these feet solidly supportin it. he column 4 is provided with a suitable way 5 for the head 6. The table 7 of the bed is carried by the cross rail 8 slidably mounted on the way 9, the table being adjustably mounted on the cross rail and the cross rai adjustably mounted on the base, both being provided with hand and power feed means, not shown, so that a die block bolted to the table may be brought under any of the tools carried by the head. 10 represents the feed screw for the head and 11 the vertical drive or power shaft. The driving connections for the screw and shaft are not illustrated as they form no part of this invention.

The head is provided with a main or large milling cutter spindle 12, an auxiliary or 'small milling spindle 13 and a cutter operating carriage 14, see Fig. V, the cutter illustrated being of the type designated by the trade as a cherry tool or cherrying cutter. The spindle 12 is rovided with a journal 12' at its lower en a bearing 12" being provided therefor. The spindle 12 is also provided with a double thrust ball bearing adjustably supported so that a limited vertical adjustment of the spindle is provided to secure its rigidity. This thrust bearing is best shown in Figs. IV and V and comprises an internally threaded box 15 mounted within the head by the screws 16. The bearing sleeve 17 carries the race members 18, while the spindle carries the intermediate thrust ring member 19. Adjusting rings 20 are threaded into the box 15 which has openings 21 therein alined with openv Patented Jniy22, info. Application filed August 1a, 1913. Serial No. 250,429.

I so

ings 22 in the walls-of the head adapted to receive a rod or tool to engage in the holes 23 'for ad'usting the rings; 'Set screws 24 are-provi ed for locking the rlngs 1n thelr The jack shaft 28 is mounted arallel with the spindle 12 and is connecte to shaft-11 i by the gear27 on drive shaft 11 and gear i head. The vertica 29 on the stub shaft 30 and gear 31 on shaft 28.-flees Fig. IV. The gear 31 is keyed to the shaft 28. The spindle driving gear 32 is rotatably mounted upon the drlven' shaft 28 and meshes with gear 33 on the s indle. A clutch member v34 is splined to' t e jack shaft to coact with a clutch mem-v ber on the gear 32 thereby provldmg'a d senga eable driving connection for the mam spindle.

The auxiliary spindle'13, 1s provlded with oppositely disposed conical bearings 35 and 36 at its lower end and a cylindrical bearlng 37 at its upper end,'see Fig. V.

An adjusting ringg38 is provided for thelower bearings.v This form of bearing is well adapted to receive both radial and end loads to which the spindl is subjected in use. The bearings 35 and 36 are carried in a sleeve 39 verticall adjustable within the l adjustments of this sleeve are effected b the hand wheel 40. The connection for the hand wheel spindle to the sleeve are not illustrated. i

The spindle bracket 41 carrying the sleeve 39 is preferably .detachably secured to the head 6 by the bolts 42 so thatthe second spindle can be supplied, if desired, as an attachment.

The spindle 13 is provided with a gear 43 at its upper end connected by the. gears 44 and 45, shown conventionally in Fig. II, to the gear 46 on the jack shaft 28. The gear 43 is splined to the spindle 13. The gear 46 is rotatably mounted on the shaft 28 and provided with an annular clutch flange 47 having, the expanding clutch member 48 therein the clutch member 48 beingsecured to the shaft. A lever 49 is pivoted on the head at 50 to actuate the clutch member 51,

' gaged in the socket orchuck 54 of the holder 4 55 which is mounted in the reciprocating carsee Fig. IV. 1

When it is desired to drive the auxiliary spindle the lever 49 is manipulated to engage the clutch for the gear 46.

The circular cutter 52 has cutting teeth on its periphery and sides and is supported for vertical and oscillating movement. The cutter 52 is provided with ashank 53 enriage 14. This carriage" 14 has curved or segment-like ways 56 for the segment-like guides 57 projecting oppositely from the re terate sides of the holder. The carriage cates in V-shaped ways 58 and 59, the way 59 being adjusta 1y supported by means ofthe ad usting and set screws60 and 61,-see Fig.

V. Screws 62 and 63 hold the ways in the head laterally, the way 59 having enlarged holes to receive thescrews permitting the lateral movementof the'way so that a very close slidin fit for the carriage in its way is provided. or convenience in assembling the carriage is formed in two parts 64 and 65 divided along vertical lines and secured together by screws 66. Shims 67 may be arranged" between the carriage members to accrank 72 by a pitman or connecting rod 73.

On the crank 72 is an arm 74 connected by the link 75 to the arm 76 on the rock shaft 77. The rock shaft arm 76 is connected to the spring- 7 8 which actuates the carriage, on its work stroke. The cam 68 acts upon the roller 7 9'on the arm 80 of the rock shaft ,7 7 The arm 74 is connected to the crank 72 by the clutch 81 adjusted by means of the hand reciprowheel 82 threaded upon the end of the shaft and held in its ad usted positions by the spring pin or detent 83. This provides for the disengagin or throw out of the cutter and for the a justment of its-feed to the work. To simultaneously oscillate the cutter its arm 84 is connected by the link 85 to theswinging arm 86 having a longitudinal grooveen aging( the roller 87 on the cam 68,-see. ig. I

The hand feed for the head is shown in Flg. VI in which the shaft 88 is provided with the hand wheel 89 and with the pinion -90 meshing with the pinion 91 on the feed screw.

With this arrangement of parts, when the cutter starts on its forward or cutting stroke it at the same time lowers to the work. At the'end of its cutting stroke it is raised from the work. The cutter is lifted from its work'by the cam and the spring forces the cutter to its work. However, the strength of the spring is such that it cannot be overloaded by takin too heavy a cut for the parts so that be ore any damage is done to the parts the spring Wlll yield and a shallower cut be taken when the operator will observe that the depth of cut is too great and it can be regulated accordingly.

To relieve shock, as the cutter is brought to its work I provide buffer springs 92 seated in bores 93 of the carriage and supported by brackets 95,see Fig. V.

The clutch member. 34 for the gears 32 and 71 is shifted from the lever 96 mounted on the rock shaft 97 having an arm 98 engaging the clutch, as bestshown in Figs. I, V II, and VIII. To alternately lock the gears 32 and '71 as the clutch is shifted from one to the other I provide locking pins 99 and 100, respectively, supported in the holders 101 to be projected by the springs 102. These pins are retracted by the cam rod 103 adapted to engage the projecting pins 104 as the cam rod is reciprocated by the arm 98 which has a pin 105 engaging the cam rod as shown in Figs. VII and VIII. In Fig. VII the pin 100 is shown engaged with the gear 71,. the other pin being retracted so as to permit the driving of the main spindle.

The main spindle is provided with a chuck 106 having a tapered shank to fit the tapered socket 107 in the spindle. A rod 108 disposed longitudinally through the spindle and provided with a head 109 is threaded into the inner end of the chuck shank,see Fig. IV.

\Vith this arrangement of parts I provide a structure which is adapted for very heavy die cutting work and is of large capacity and convenient in operation.

I have illustrated and described my im provements in the form in which I have embodied them for the market. I have not attempted to illustrate certain modifications and adaptations which I. contemplate as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination of a reciprocating tool holder carriage, a cutter, a holder for said cutter having segmental slides and an arm projecting upwardly above said slides, said carriage having segmental ways for said slides, a crank -mounted above said carriage, a pitman connecting said crank to said carriage, an arm on said crank adjustably and releasably secured thereto, a rock shaft having arms thereon, a link connecting an arm on said rock shaft to said arm on said crank, an actuating spring connected to an arm on said rock shaft, a cam, an arm on said rock shaft provided with a roller traveling on said camwhereby the carriage is retracted, a pivoted arm provided with a longitudinal groove disposed at the side of said cam, a roller on said cam coacting with said groove whereby the arm is oscillated as the cam is rotated, and a. link connecting said arm on said tool holder to said pivoted arm.

2. The combination of a reciprocating tool holder carriage, a cutter, a. holder for said cutter having segmental slides and an arm projecting upwardly above said slides, said carriage having segmental ways for said slides, a crank mounted above said carriage,

a pitman connecting said crank to said carriage, an arm on said crank, a rock shaft having arms thereon, a link connecting an arm on said rock shaft to said arm on said 'crank, an actuating spring connected to an arm on said rock shaft, a cam, an arm on said rock shaft provided with a roller traveling on said cam where-by the carriage is retracted, a pivoted arm provided with a longitudinal groove disposed at the side of said cam, a roller on said cam coacting with said groove whereby the arm is oscillated as the cam is rotated, and a link connecting said arm on said tool holder to said pivoted arm.

3. The combination of a reciprocating tool holder carriage, a cutter, a holder for said cutter having segmental slides, said carriage having segmental ways for said slides, a crank mounted above said carriage, a pitman connecting said crank to said carriage, an arm on said crank adjustably and releasably secured thereto, a rock shaft having arms thereon, a link connecting an arm on said rock shaft to said arm on said crank, an actuating spring connected to an arm on said rock shaft, a cam, an arm on said rock shaft provided with a roller traveling on said cam whereby the carriage is retracted, and operating means for said holder comprising said cam;

4. The combination of a reciprocating tool holder carriage, a cutter, a. holder for said cutter having segmental slides, said carriage having segmental ways for said slides, a

crank mounted above said carriage, a pitman connecting said crank to said carriage, an arm on said crank, a rock shaft having arm-s thereon, a link connecting an arm on said rock shaft to said arm on said crank,

' an actuating spring connected to an arm on said rock shaft, a cam, an arm on said rock shaft provided with a roller traveling on said cam whereby the carriage is retracted,

and operating means for said holder comprising said cam.

5. The combination of a reciprocating tool holder carriage, vertically disposed opposed ll-shaped ways therefor, one of said ways being laterally adjustable, a circular cutter.

having peripheral and side teeth, a holder for said cutter having segmental slides on its sides, said carriage having opposed segmental ways for said slides, a. crank, a pitman connecting said crank tosaid carriage, an

arm on said crank provided with a clutchmember, a coacting clutch member splined to said crank, a clamping nut for said clutch whereby said arm may be adj ustably secured to the crank, an actuating means for said carriage connected to said arm on said crank, and an actuating means for said tool holder.

6. The combination of a reciprocating tool holder carriage, vertically, disposed ways therefor, a circular cutter having peripheral and side teeth, a holder for said cutter having segmental slides on its sides, said carriage having op osed segmental. Ways for saidslides, a or 1 crank to said carriage, an arm, on sa1d crank provided with a clutch member, 'a coacting clutch member splinedflto said crank, a

' clamping nut for saidxclutch whereby said arm may be adjustably secured to said crank,

tool holder carriage,

an actuating means for said carriage connected to said arm on sa1d crank, and an actuating means for said tool holder.

'7. The c'ombination of a circular cutter having peripheral and side teeth,,a holder for sai cutter having segmental slides mounted in said carriage, a crank mounted on sa1d head above said carriage, a pitman connecting said'crank to said carriage, an arm on said crank, a rock shaft havlng arms thereon, a link connecting said rock shaft to said arm on said crank, an actuating spring connected to said rock shaft, means for actuating said rock shaft to return the carriage, and'means for actuating said cutter holder operatively connected to said carria e actuating means, for the purpose specifiei v 8. The combination of a reciprocating tool holder carriage, a cutter, a holder for saidcutter mounted for oscillating movement on said carriage, a crank, a pitman connectin said crank to said carriage, an arm on said crank adjustably and releasably secured thereto, means for actuatin said crank connected to said arm thereoi comprising a spring for advancing said carriage and a cam for retracting sa1d carriage, a pivoted arm actuated by said cam, and a link connecting said tool holder to said pivoted arm.

9. The combination of toolholder carriage, a cutter, a holder'for said cutter mounted for oscillating movement on said carriage, a crank, a pitman a reciprocating v connecting said crank to said carriage,

means for actuating said crank connected to sa1d arm thereof comprlslng a spring for advanclng sa1d carnage and a cam for retracting said carriage, a pivoted arm actuatedby said cam, and a link connecting said tool holder to said pivoted arm.

10.v The combination of a reciprocating tool holder carriage, a cutter, a holder for said cutter mounted for oscillating movement on said carriage, a crank, apitman connectin said crank to said carriage, an

arm on sa1d rank adj ustably and releasably secured thereto, means for actuating said crank connected to sa1d arm thereof comprising a spring for advancing sa1d carriage and a cam for retractin said carriage, and

means for actuating sai said cam.

11. The combination of a reciprocating tool holder carriage, a cutter, a holder for said cutter mounted for oscillating moveholder comprising a pitman connecting said a reciprocating a jack shaft, a spindle connecting said crank to said carriage means for actuating said crank connected to said arm thereof comprising a spring for advancing said carriage and a cam for retractin said carriage, and means for'actuating sai holder comprising said cam.

12.-The combination of a reciprocating tool holder carriage, a cutter, a holder for said cutter mounted-for oscillating movement on said carriage, means for actuating said carriage comprisin a spring for advancing said carriage an a cam for retracting said carriage, and means for actuating sa1d tool holder comprisin said cam.

13. The combination oi a reciprocating tool holder carriage, a cutter, a holder for said cutter mounted for oscillating movement on said carriage,means for actuating said carriage comprising a sprin for advancing sa1d carriage, and positive means for retracting said carriage, and means for actuating said tool holder comprising said cam.

14. The combination with a horizontally adjustable table and an of a reciprocating t'ool holder carnage on said head, a circular cutter having periph eral and side teeth, a holder for said cutter mounted to oscillate on said carriage about the axis of the cutter, and means for reciprocating said carriage and oscillatin said tool. holder in synchronism comprising a carriage actuating spring.

15. The combination with a horizontally adjustable table and an overhanging movable head, of a spindle carried thereby, driving means for said spindle comprising a driving gear on said jack shaft, a coacting car on said spindle, a reciprocating tool holder carriage on said head, a cutter, a holder for said cutter mounted for oscillating movement about the axis of the cutter, means for reciprocating said carriage and oscillating sa1d cutter holder in synchronism, comprising a driving gear on said jack shaft, .a clutch on said jack shaft disposed between said driving gears and adapted to secure either of said gears to said jack shaft, and a lockin means for said gears actuated by the shi ting of said clutch. 4

16. Thecombination with a horizontally adjustable table and an overhanging movable head, of a spindle carried thereby, driving means for said spindle comprising a jack shaft, a spindle driving gear on said jacik shaft, a coacting gear on said spindle, a recip-rocating tool holder carriage on said head, a cutter, a holder for said cutter mounted for oscillating movement about the axis of the cutter, means for reci said carriage and oscillating sa1d cutter holder in synchronism, comprising a driving gear on said jack shaft, and a clutch on said proc'ating' overhanging head,

shaft having driving connections to said main spindle,

and driving connections from said jack. haft to said auxiliary spindle ineluding a clutch.

' spindle,

18. In a structure of the class described, the combination with a head, of a feed means therefor, a main spindle, an auxiliary v a supporting bracket therefor detachably mounted on said head, a manually operated means for feedin said auxiliary spindle independent of said ead, and means onsaid head for driving said spindle.

19. In a structure of the class described, the combination of a main spindle, an auxiliary spindle, a jack shaft having driving connectlons with said main spindle comprising a clutch, a train of drivmg gears for said auxiliary spindle comprising a gear on said jack shaft, and a clutch for connecting said gear to said jack shaft, and manually operated means for feeding said auxiliary spindle.

20. In a structure of the class described, the'combination of a main spindle, an auxiliary spindle, a jack shaft having driving connections with said main spindle comprismg a clutch, a train of driving gears for said auxlllary spindle comprising a gear on said jack shaft, and a clutch for connecting said gear to said jack shaft.

21. The combination with a spindle, of a and bea 'ngtherefor at the lower end of said spindle, a thrust bearing comprising a thrust ring on said spindle, a pair of coaicting race members at each side thereof a'nd bearing balls interposed between disposed between said driving the class described,

said thrust ring and race members, an adjustable sleeve in which said race membels are mounted, a pair of threaded adjusting rings at the ends of said sleeve, a bearing for the upper end of said spindle, and driving means for said spindle comprlsing a gear disposed between the upper end and said thrust bearing.

22. The combination with a spindle, of a tapered journal and bearing therefor at the lower end of said spindle, a thrust bearing comprising a thrust ring on said spindle, a

pair of coacting race members at each side thereof and bearing balls interposed between said thrust rin and race members, an adjustable sleeve in which said race members are mounted, and a pair of threaded adjusting rings at the ends of said sleeve.

23. The combination with a spindle, of a tapered journal and bearing therefor at the lower end of said spindle, a thrust bearing comprising a thrust-member on said spindle, coacting bearing members, an adjustable sleeve in which said coacting members are mounted, a pair of threaded adjusting rings at the endsof said sleeve, a bearing for the upper end of said spindle, and driving means for said spindle comprising a gear disposed between the upper end and said thrust bearing.

24:. The combination with a spindle, of a tapered journal and bearing therefor at the lower end of said spindle, a thrust bearing comprising a thrust member on said spindle, coacting bearing members, an adjustable sleeve in which said coacting members are mounted, and a pair of adjusting rings at the ends of said sleeve.

In witness whereof, I have hereunto set my hand and seal in the presence of. two witnesses.

, EUGENE [as] Witnesses:

H. A; VANDEROOOK, y

ALTON Gnnow. 

